Grain spawn is a little known secret weapon of the world of mushroom cultivation. It’s made from sterilised grains that have been inoculated with a live mycelium culture.
Grain spawn contains a lot of energy for the mycelium to consume. It’s a bit like rocket fuel for mushrooms. It’ll take off like wildfire once added to your bulk substrate.
Mother Nature works her magic using spores but in a controlled environment you need to tip the scales in your favour by using clean high-quality grain spawn so you are doing your best to ensure success.
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Back order – Any items on back order will be dispatched separately. Items on back order are anticipated to be fulfilled within 21 days unless stated otherwise.
Pleurotus Ostreatus is known as the white, pearl, beige, or grey oyster mushroom amongst a multitude of other names. Depending on where you are and who you’re talking to the white oyster species being referred to may be different due to the varying range of qualities.
Some ‘white oyster’ mushrooms are suitable for growing during the summer months, others are more suited to growing in winter. These impressive giants develop thick meaty caps when grown on hardwood and given plentiful fresh air.
White oyster mushrooms pack a big umami punch with every mouthful. More subtle in flavour than pink oyster mushrooms but with a thicker and meatier texture. Ideal for soups, stir-fries and deep-frying.
White oyster mushrooms will grow on a wide range of materials including sugar cane mulch, straw, hardwood, paper and coffee grounds.
For beginners we recommend starting with straw or chopped sugar cane mulch. Supplementation can be added in the form of coffee grounds or bran but will increase the chances of contamination.
White oyster mushrooms are considered to be a side-fruiting mushroom compared to the king oyster or button mushroom which are top-fruiting mushrooms.
Save on filter patch grow bags when you spend over $45 on grain spawn or grow kits.
White oyster mushroom mycelium is incredibly vigorous. The mycelium is opaque, white and fast growing. After initially colonising the substrate it will continue to grow thicker as it matures.
Maturing mycelium will begin to produce a yellow liquid. This is a metabolite which is a natural excretion of the mycelium.
Any primordia which has formed prematurely, or in-vitro can be removed prior to using the spawn as usual.
Experienced mushroom cultivators will often produce their own grain spawn to reduce the cost of growing mushrooms. Grain spawn can be produced in small batches without the need for purchasing expensive equipment. Learn more about making grain spawn in our guide.
White oyster mushrooms will colonise both grain spawn and substrates very quickly. Full colonisation can often expected within 7 – 10 days.
No special are requirements to trigger pinning on white oyster mushrooms. These will often begin pinning on their own if left unattended.
Ensure that they are receiving over 70% humidity with generous amounts of fresh air exchange to encourage large caps.
Summer varieties: 16 – 30 degrees Celsius (60 – 86F)
Winter varieties: 13 – 20 degrees Celsius (55 – 70 F)
These values are to be used as a guide only due to the differences between white oyster varieties available. White oyster mushrooms require more fresh air than pink oyster but less than king oyster.
Humidity can be managed through a diligent misting and fanning regime, however the introduction of a humidifier and humidity controller can help automate the process and ensure consistency.
Adding a 6L humidifier and controller to a greenhouse with the addition of a USB fan is a quick and easy way to make a low cost fruiting chamber that delivers excellent results.
Mushrooms require humidity to grow. We recommend using a mini-greenhouse. Spraying the inside walls of the greenhouse will help raise humidity. A cheap humidifier can used to automate the process.
It’s important to ensure that the grow kit has fresh air exchange. Mushrooms produce carbon dioxide and will grow long and leggy if they require more oxygen.
Check the product pages for species specific requirements.
Alternatively you can build a Shotgun Fruiting Chamber (SGFC) from a few common items found easily in your local hardware store.
We’re a small scale producer of gourmet mushroom grain spawn and ready to grow kits located in South East Queensland. We’re passionate about fungi and we love sharing our obsession with the world.
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